Writing-machine.



E. B. HESS. WRITING MACHINE. APPLIOATIOH FILED JULY 10, 1911.

Patented Jan. 27, 1914.

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E. B. HESS. WRITING MACHINE.

APPLICATION FILED JULY 10, 1911. 1,085,382, Patented Jan. 27, 191% A a w J g4 Q III" L/ZZZMM UNITED %TATE% PATENT @l-FFKQE.

EDWARD B. HESS, OF NEW YORK, N. Y., ASSIGNOR, BY IVIESNE ASSIGNIQENTS, TO

ROYAL TYPEWRITER NEW YORK.

COMPANY, IN (3., OF NEW YORK, N. Y., A CORPORATION OF WRITING-MACHINE.

Original application filed May 15, 1907, Serial No. 373,849. Divided and this application filed July 10, 1911.

Specification of Letters Patent.

Patented Jan. 27, 1914.

Serial No. 637,759.

To all whom it may concern Be it known that I, EDWARD B. Hess, a citizen of the United States of America, residing in the borough of Manhattan, city, county, and State of New York, have invented a certain new and useful Improvement in lVriting-Machines, of which the following is a specification.

This invention comprises a new line-lock organization hereinafter set forth in detail.

In the accompanying drawing: Figure l is a verlical longitudinal section of so much of a front strike typewriting machine as is deemed desirable to illustrate the invention; Fig. 2, a rear elevation: Fig. 3, a plan: Fig. at a rear elevation of margin stop device: and Fig. o'shows a modification.

X and Y indicate the side or end plates of a carriage of which S is the rack bar and S the ordinary cylindrical platen mounted to turn in the end plates. In-rear of the platen, there is mounted in the end plates a transversely disposed bar N having coincident and'equally spaced teeth on its upper and rear surface. On this bar are adjustably mounted right and left hand margin stops K, and also intermediate adjustable stops M that may be used for tabulation purposes.

J is a center or frame stoppivoted upon the frame at j and adapted to be moved transversely of the toothed bar N.

In the particular construction illustrated, the center stop- J is so arranged as to be out of the path of the tabular stops M but in the path of the margin stops K. The stops M are bifurcated and closely fit in the spaces bet-ween the upper and side teeth of the rack bar. The margin stops may each be constructed as follows: Each has a pivoted spring latch K adapted to engage the spaces between the teeth on the upper surface of the bar N ,pivoted on a stop frame K that straddles the rack bar and is held in position thereon by cross pins Z.- extending beneath the bar between lugs on opposite sides of the frame. The part of the stop against which abuts the frame stop J is the head b of an. adjustable screw turning in a threaded opening in a lateral projection or block on one side of the frame K and having applied to its threaded end a lock nut Z1 A beveled plate /.r carried on the upper surface of the projectir i. in which the screw mounted series to s: 1; Eh;- stop lever out g rocking bifurcated arm letters at the end of a line.

of theway when the carriage is moved in one direction whereas the stop lever J is engaged by the head it" when the carriage moves in the other direction. The stop lever J is shown as a straight lever and below its pivot it fits between the arms of a 0 fast on a rock shaft 0 pivoted in the frame of the machine and having at its right hand end an upright projection 0 attached by a link 0 to a vertically disposed lever arm 0 located at the right hand side of thekey board'of the ma chine. Springs 0, 0, bearing respectively upon opposite sides of the vertically disposed bifurcated part 0 tend to maintain itin central or vertical position. Above the pivot j of stop lever J, the latter has. an adjustable screw 0 that engagesthe lower end of a rack releasing lever 1, whose upper end lies under a horizontal flange of the .cscapement or feed rack S. This rack is carried in the ends of lovers 8 s pivoted at s on the side plates of the carriage and having applied to their ends springs s the reaction of which tends to hold the rack in engagement with'the pinion S of the ,escapement devices. hen lever arm 0 is drawn to the front, the upper end of stop lever J is rocked away from the stop bar N. This movement is of such extent as to disengagethe lever J from the part It" of the margin stop to thereby permitof the writing of one or more W hen lever arm 0* is pressed rearwardly, the upper end of lever J will be swung toward the intermediate or tabular stops and this occurs to such extent as to cause such lever to engage a stop M on the stop bar. In tabulating work provided with finger pieces O O \Vhen lever O" or elther fin er iece O or O is released the mal position Lllilg springs.

voted at 1) on tee right hand side of parts all tend to return to norunder the influence of the conof the guide comb X.

by. a reaction spring q.

stop lever J at a suitable point above the pivot j of the latter is a plate P whose axis p is at right angles to axis j. This plate extends upwardly substantially as far as the stop lever J and is normally held away from the latter by reaction sprin p. n extension P from plate P exteu s a suit able distance below its pivot and is connected by link P with a radial arm Q on the upper .end of a vertical rock shaft Q having near its lower end a radial arm Q? from which extends forward a link Q3 connccted at its front end with a radial arm 9 on a transverse rock shaft g. This rock shaft g has extending upward from it a key lever locking plate Q2 which normally is inclined slightly forward from a vertical line. The fiat k'ey levers'of the-machine are of the class that ,are pivoted at their rear ends and extend horizontally forward to tiguous to the piece ends of the levers.

by priate ways, the frame from the carriage stop, incidently unlocked.

It is known that heretofore various means for locking key levers both above and'below the same have been proposed. The construction herein described is characterized by the following novel features: (a) the key levers are pivoted at their rear ends and the rigid locking plate acts against their under faces adjacent their finger piece ends: (11) the locking plate is applied to the under faces of the key levers contiguous to the guide comb which is located adjacent the finger These features have the advantage that when the finger piece of a locked lever is struck the blow is received upon the rigid locking blade conguide comb and near the the means described, or in other approstop is disengaged the keys are cothe key board where their upturned ends, finger piece end, with the result that there standing in different rows or banks as usual, are equipped with finger pieces, They are all of the sa e character and the drawing shows but e, the shorter levers having 1ts finger piece in the rear bank or row of the kev board. Ad-

vers IS a fixed vertical transverse slotted plate X, ordinarily called a guide comb, in the slots of which play and are guided the flatkey levers. At or adjacent this comb the under faces of the key levers are formed with locking surfaces 1- which are in line transversely of the machine. Such locking surfaces form the lower edges of widened parts of the key levers that fit in the slots At one end of each locking surface, the front end as 10WI1, there is a clearance space 9 opposite or beneath which stands the upper edge of the locking plate f, where it is normally held \Vhen the stop J P is engaged by either a margin stop or a tabular stop as the carriage is moving during the progress of the printing operation or is jumped for tabulation, plate P will be carried against the side of stop J and in its movement will effect a movement of rocl-i shaft 9 that will carry the locking plate g under the locking surfaces 1" on the key levers and positively and" firmly lock them against depression.

The line locking or key lever locking plate normally standing in an upright position although slightly inclined to the front does 4 not interfere with depression of the key levers for printing because of the clearance marked R, which is one of acent the front ends of the s iorter key le-- When 1 locking surfaces,

is no bending or distortion of the lever and no lateral displacement thereof.

The invention is shown applied to a front strike machine. It is, however, not restricted to machines of that type.

This application is a division of my application filed May 15, 1907, Ser. No. 373,849.

I claim:

' 1. In a typewriting machine, the combination of horizontally disposed 'flat key levers pivoted at their rear ends and each formed with a locking surface on its lower edge adjacent its front end with a clearance space at the end of the locking surface, all said locking surfaces being arranged o posite each other transversely of the mac me, a

key lever locking member arranged below said clearance space and in juxtaposition to the locking surface, a carriage adapted to be moved step by step transversely of the machine, a stop carried by the carriage, a cooperating stop on the frame, an operative connection between the latter and said locking member, said connection extending from the rear of the machine forward to said locking member, whereby when the two stops come in contact said lockin member is moved beneath the locking sur aces of the key levers to lock them against depression and means under the control of the operator for unlocking the key levers to permit their actuation.

9.. In a typewriting machine, the combination of horizontally disposed flat key levers pivoted at their rear ends and each formed with a locking surface on its lower edge adjacent its front'end with a clearance space at the end of the locking surface, all said locking surfaces being arranged o posite each other transversely of the machine, a transversely disposed guide comb in the slots of which the flat key levers are guided at or adjacent the parts thereof having said a key lever locking memframe, an operative connection between the latter and said locking member whereby when the two stops come in contact said locking member is moved beneath the locking surfaces' of the key levers to lock them against depression and means unde'r the control of the operator for unlocking the key levers to permittheir actuation.

- the combination pivoted at acent its of which the fiat key adjacent the parts thereof having said lock-' pivoted locking 3. In a typewriting machine, the combination of horlzontally disposed flat key levers their rear ends and each formed with a locking surface on its lower edge adfront end with a clearance space at the end of the locking surface, all said locking surfaces being arranged o posite each other transversely of the machine, a transversely disposed guide comb in the slots levers are guided at or mg surfaces, an upwardly extending pivoted locking-plate whose upper edge lies beneath said clearance space, is closely adjacent said locking surfaces and is movable to a position under said locking surfaces, a carriage adapted to be moved .step'by step transversely of the machine, a stop carried by the carriage, a cooperating stop on the frame, an operative connection between the latterand said pivoted locking blade whereby when the .two stops come in contact, said blade is moved beneath the locking surfaces of the key levers to lock them against depression and meansunder the control of the operator for unlocking the keylevers to permit their actuation.

, 4. Ina front strike typewriting machine, of horizontally disposed flat key levers pivoted at their rear ends and each formed with a locking surface on its lower edge adjacent its front end with a clearance space at the end of the locking surface, all said locking surfaces being arranged opposite each other t1 ansversely of the machine,

comb in the slots of which the flat key levers Ooplu of thii patent may be obtained for five centi, each, b v Washington, D. 0.

a transversely disposed guide are guided at or having saidlocking surfaces, an upwardly extending pivoted locking blade whose upper edge lies beneath said clearance space and is movable to a position under said locking surfaces, a carriage adapted to be moved step by step transversely of the machine, a stop carried by the carriage, a cooperating stop on the frame comprising a vertically disposed rocking lever part, a horizontally disposed link extending rearwardly from said pivoted locking blade and an operative. connection between said verti-v cally disposed lever part and said link whereby when the two stops come in contact the locking blade is moved under the locking surfaces of the keylevers tolock them and means under the control of the operator for unlocking the key levers.

5 In a typewriting machine the combination of horizontally disposed key levers pivoted at their rear ends'hnd each formed with a locking surface on its lower face adjacent its front end with a clearance space at one end of the locking surface, all such locking surfaces being arranged opposite each other transversely of the machine, a carriage adapted to be moved step by step transversely of the machine, a cylindrical platen mounted in the carriage, a stop carried by the carriage in rear of the platen, a cooperating stop mounted on the frame in rear of the platen, a key lever locking member normally disposed under the key levers and beneath said clearance space therein and adapted to be moved under the locking surfaces to lock all the key levers against depression and an operative connection extending forward from the stop on the frame to the keylever locking member whereby the latter is moved to locking position when said stop and the stop on the carriage come in contact.

In testimony whereof, I have hereunto subscribed my name.

EDWARD B. HESS.

Witnesses:

. L. CoLLYnR,

GEORGE F. HANDLEYt addressing. the commoner of 3mm,

adjacent the parts thereof- 

